Link error-library conflict (libcmt. lib and libcmtd. Lib)

In the same project, all source files must be linked to the same C Runtime Library. If a file uses the multithreaded dll version, and other files use the single-threaded or multithreaded version library, that is to say, different libraries will cause this warning.

 

 

 

In a word, there is a conflict between Lib. Some libs to be imported must be deleted.

 

Version	Type	Library Used	Ignored Library
R release	Single thread	Libc. Lib	Libcmt. Lib, msvcrt. Lib, libcd. Lib, libcmtd. Lib, msvcrtd. Lib
	Multithreading	Libcmt. Lib	Libc. Lib, msvcrt. Lib, libcd. Lib, libcmtd. Lib, msvcrtd. Lib
	Multithreading with DLL	Msvcrt. Lib	Libc. Lib, libcmt. Lib, libcd. Lib, libcmtd. Lib, msvcrtd. Lib
D debug	Single thread	Libcd. Lib	Libc. Lib, libcmt. Lib, msvcrt. Lib, libcmtd. Lib, msvcrtd. Lib
	Multithreading	Libcmtd. Lib	Libc. Lib, libcmt. Lib, msvcrt. Lib, libcmtd. Lib, msvcrtd. Lib
	Multithreading with DLL	Msvcrtd. Lib	Libc. Lib, libcmt. Lib, msvcrt. Lib, libcd. Lib, libcmtd. Lib

For example, to compile a single-threaded project of the release version, add the following parameter to the linker command line:/nodefaultlib: libcmt. Lib
/Nodefaultlib: msvcrt. lib/nodefaultlib: libcd. lib/nodefaultlib: libcmtd. lib/nodefaultlib: msvcrtd. Lib

Solution:

Add/MTD or/mt to Cuda compilation options

Project Settings:

If a "libcmt" Conflict error exists, choose "configuration properties"> "linker"> "input"> "ignore a specified library. add lib or add/nodefaultlib: libcmt in "Additional Options" of "configuration properties --> linker --> Command run. lib
The libcmtd library sometimes cannot be ignored. If it is ignored, there will be an external symbol error that cannot be parsed.

In fact, when there is a convenient method link, add the parameter/Force: multiple.